Indexed Adjustable Pocket Screw Jig

Description

I Took The Excellent Design From Roklobster04 Since I Wanted A Bolt-Down Jig Instead Of Just A Clamp-On. I Modified A Few Things: 1. Indexed The Sleeve For 3/4", 1", 1.25" And 1.5" Width Of Stock. This Is On The Back Of The Sleeve Labeled 3,4,5,6 (As In Quarters Of An Inch). All The Way Down Is 3/4" And All The Way Up Is 1.5". The Height And Placement Of These Is Calibrated Against A Kreg Jig In My Shop. 2. Changed The Vise Plate To Accommodate A Washer And Either A Bolt Head Or Thread-Locked Nut Behind The Aluminum Clamp Plate. This Moves The Vise Plate Back And Forth As The Screw Is Turned. 3. Changed The Knob To Take A Nut And Washer That Secures The Knob To The Shaft. 4. Modified The Jig To Use One Slot-Inserted Nut In The Base Instead Of Two (One On Each End) Because I Had Trouble Getting The Shaft To Cinch Without A Lot Of Backlash. The Fit Was Very Tight When Printed In Abs And I Modified The Gaps, Adding About 0.5Mm For Clearance On Sleeve And Vise Mating Surfaces. The Original Design Included All The Hard Work Of The Basic Setup, And I Was Just Able To Tweak It A Bit. The Original Design Used An Aluminum Plate Countersunk To Take A Screw And Fastener On The Back Side Of The Plate. I Found It Easier To Thread The Aluminum Plate And Use A Screw From The Back Side, Then File The Screw Extension On The Vise Plate Flat. I Have Ordered, But Not Yet Tried Mcmaster-Carr Flanged Sleeve Bearing Number 9440T54. Will Update After They Arrive. Update: The Mcmaster-Carr Bearings Arrived And Fit Perfectly In The Jig. Attached With Some Ca To Keep Them From Slipping Out And Did Several Test Holes, All With Great Results. Tip: Set The Depth Collar On The Drill Bit By First Putting A 1/8" Spacer On The Bottom Of The Jig. Then Drop The Drill Bit In And Tighten The Collar With The Bit Resting On The Spacer.

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